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challenging.go
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challenging.go
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// Copyright (c) 2021 PaddlePaddle Authors. All Rights Reserved.
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package xchain
import (
"encoding/json"
"strconv"
"github.com/PaddlePaddle/PaddleDTX/xdb/blockchain"
"github.com/PaddlePaddle/PaddleDTX/xdb/errorx"
)
// ListChallengeRequests lists challenge requests on blockchain
// filter condition may include fileOwner, storageNode, fileID, challenge status, time period and items number limit
func (x *XChain) ListChallengeRequests(opt *blockchain.ListChallengeOptions) ([]blockchain.Challenge, error) {
opts, err := json.Marshal(*opt)
if err != nil {
return nil, errorx.NewCode(err, errorx.ErrCodeInternal,
"failed to marshal ListChallengeOptions")
}
args := map[string]string{
"opt": string(opts),
}
mName := "ListChallengeRequests"
s, err := x.QueryContract(args, mName)
if err != nil {
return nil, err
}
var cs []blockchain.Challenge
if err = json.Unmarshal(s, &cs); err != nil {
return nil, errorx.NewCode(err, errorx.ErrCodeInternal,
"failed to unmarshal Challenges")
}
return cs, nil
}
// ChallengeRequest sets a dataowner's challenge request on chain
func (x *XChain) ChallengeRequest(opt *blockchain.ChallengeRequestOptions) error {
opts, err := json.Marshal(*opt)
if err != nil {
return errorx.NewCode(err, errorx.ErrCodeInternal,
"failed to marshal ChallengeRequestOptions")
}
args := map[string]string{
"opt": string(opts),
}
mName := "ChallengeRequest"
if _, err = x.InvokeContract(args, mName); err != nil {
return err
}
return nil
}
// ChallengeAnswer sets a storage node's challenge answer on chain
func (x *XChain) ChallengeAnswer(opt *blockchain.ChallengeAnswerOptions) ([]byte, error) {
opts, err := json.Marshal(*opt)
if err != nil {
return nil, errorx.NewCode(err, errorx.ErrCodeInternal,
"failed to marshal ChallengeAnswerOptions")
}
args := map[string]string{
"opt": string(opts),
}
mName := "ChallengeAnswer"
resp, err := x.InvokeContract(args, mName)
if err != nil {
return nil, err
}
return resp, nil
}
// GetChallengeByID gets a challenge by challengeID
func (x *XChain) GetChallengeByID(id string) (blockchain.Challenge, error) {
var c blockchain.Challenge
args := map[string]string{
"id": id,
}
mName := "GetChallengeByID"
s, err := x.QueryContract(args, mName)
if err != nil {
return c, err
}
if err = json.Unmarshal(s, &c); err != nil {
return c, errorx.NewCode(err, errorx.ErrCodeInternal, "failed to unmarshal Challenge")
}
return c, nil
}
// GetChallengeNum gets challenge number given filter condition
// filter condition may include storageNode, challenge status, time period
func (x *XChain) GetChallengeNum(opt *blockchain.GetChallengeNumOptions) (uint64, error) {
opts, err := json.Marshal(*opt)
if err != nil {
return 0, errorx.NewCode(err, errorx.ErrCodeInternal,
"failed to marshal GetChallengeNumOptions")
}
args := map[string]string{
"opt": string(opts),
}
mName := "GetChallengeNum"
s, err := x.QueryContract(args, mName)
if err != nil {
return 0, err
}
num, err := strconv.ParseUint(string(s), 10, 64)
if err != nil {
return 0, errorx.NewCode(err, errorx.ErrCodeInternal,
"failed to parse contract response to number")
}
return num, nil
}